Providing a format indicator comprising rank indication and channel state information spatial domain resolution type

• US 10,110,284 B2
• Filed: 11/03/2016
• Issued: 10/23/2018
• Est. Priority Date: 11/03/2016
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Inventors: Wang, Xiaoyi, Akoum, Salam, Ghosh, Arunabha
• Primary Examiner(s): Fotakis, Aristocratis
• Application Number:
  US15/343,152
• Publication Number:
  US 20180123653A1
• Time in Patent Office: 719 Days
• CPC Class Codes: H04B 7/0417 Feedback systems
• CPC Class Codes: H04B 7/0456 Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
• CPC Class Codes: H04B 7/0626 Channel coefficients, e.g. channel state information [CSI]
• CPC Class Codes: H04B 7/063 Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
• CPC Class Codes: H04L 1/0026 Transmission of channel quality indication
• CPC Class Codes: H04L 1/0027 Scheduling of signalling, e.g. occurrence thereof
• CPC Class Codes: H04L 1/0028 Formatting
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 72/1273 of downlink data flows

Abstract

A user equipment can be configured to evaluate a reference signal from a network node and determine channel state information comprising a format indicator, wherein the format indicator comprises a rank indicator and the channel state information spatial resolution type. The user equipment can transmit to the network node the channel state information, which can be decoded by a network node to determine transmission scheduling parameters to be transmitted to the user equipment.

Claims

1. A network node device, comprising:

a processor; and

a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising;

transmitting a reference signal to a user equipment using an antenna, wherein the antenna is coupled to a radio frequency transmitter and a radio frequency receiver that respectively transmit and receive via a channel that operates according to a multiple input multiple output protocol;

in response to the transmitting the reference signal, receiving channel state information feedback from the user equipment, wherein the channel state information feedback comprises;

a first portion comprising a format indicator, the format indicator comprising a first data element comprising a channel state information spatial domain resolution type representative of a spatial domain resolution type of channel state information and a second data element comprising a rank indicator representative of a number of different data streams transmitted between the network node device and the user equipment, and

a second portion comprising;

a third data element comprising a first indicator of the channel state information used for selection of transmission parameters for the different data streams transmitted between the network node device and the user equipment, and

a fourth data element comprising a second indicator of channel quality applicable to a quality of the channel between the network node device and the user equipment; and

decoding the channel state information feedback, resulting in decoded channel state information feedback, the decoding comprising;

decoding the first portion, resulting in a decoded format indicator, and

based on the decoded format indicator, decoding the second portion.

2. The network node device of claim 1, wherein the operations further comprise determining a transmission scheduling parameter of the transmission parameters based on the decoded channel state information feedback.

3. The network node device of claim 2, wherein the transmission scheduling parameter comprise a modulation and coding parameter applicable to modulation and coding of the different data streams.

4. The network node device of claim 2, wherein the operations further comprise transmitting, to the user equipment, the transmission scheduling parameter.

5. The network node device of claim 1, wherein the operations further comprise transmitting traffic data to the user equipment.

6. The network node device of claim 1, wherein the user equipment comprises an internet of things device.

7. The network node device of claim 1, wherein the reference signal comprises a beam-formed signal.

8. The network node device of claim 1, wherein the reference signal comprises a non beam-formed signal.

9. The network node device of claim 1, wherein the spatial domain resolution type indicates a first spatial resolution as a default spatial domain resolution type applicable by default to the different data streams.

10. The network node device of claim 1, wherein a first spatial resolution is a default spatial domain resolution type, and wherein the spatial domain resolution type indicates a second spatial resolution higher than the first spatial resolution.

11. A user equipment, comprising:

a processor; and

a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising;

receiving a reference signal from a network device via an antenna coupled to a radio frequency transmitter and radio frequency receiver;

determining channel state information from the reference signal, the channel state information comprising;

a format indicator, the format indicator comprising a first data element comprising a channel state information spatial domain resolution type representative of a spatial domain resolution of the channel state information and a second data element comprising a rank indicator representative of a number of different transmissions between the network device and the user equipment,

a third data element comprising a first indicator of channel state information used to select transmission parameters for the different transmissions between the network device and the user equipment, and

a fourth data element comprising a second indicator of channel quality applicable to a quality of the channel between the network device and the user equipment; and

transmitting, to the network device, channel state information feedback comprising a first portion comprising the format indicator and a second portion comprising the third data element and the fourth data element, wherein the transmitting the channel state information feedback to the network device enables the network device to decode the first portion, resulting in a decoded first portion that is usable to decode the second portion.

12. The user equipment of claim 11, wherein the operations further comprise receiving transmission scheduling parameters from the network device, and wherein the transmission scheduling parameters were determined based on the channel state information feedback.

13. The user equipment of claim 12, wherein the transmission scheduling parameters comprise a modulation and coding scheme applicable to modulation and coding of the different transmissions between the network device and the user equipment.

14. The user equipment of claim 11, wherein the performance of operations further comprises receiving traffic data from the network device.

15. The user equipment of claim 11, wherein the user equipment comprises an internet of things device.

16. The user equipment of claim 11, wherein the reference signal comprises a beam-formed signal.

17. The user equipment of claim 11, wherein the reference signal comprises a non beam-formed signal.

18. The user equipment of claim 11, wherein the channel state information spatial domain resolution type indicates a first spatial resolution that is higher than a second spatial resolution that is used as a default spatial resolution.

19. A method, comprising:

transmitting, by a network device comprising a processor, a reference signal to a user equipment using a multiple input multiple output protocol;

receiving, by the network device, information from the user equipment, wherein the information comprises channel state information feedback, the channel state information feedback comprising;

a first portion of the channel state information feedback comprising a format indicator, the format indicator comprising;

a first data element comprising a spatial domain resolution type representative of a spatial domain resolution of the channel state information, and

a second data element comprising a rank indicator representative of a number of signals transmitted between the network device and the user equipment, and

a second portion of the channel state information feedback comprising

a third data element comprising a channel state information indicator used to select transmission parameters applicable to the signals transmitted between the network device and the user equipment, and

a fourth data element comprising an indication of channel quality applicable to a quality of the channel used to transmit the signals between the network device and the user equipment;

decoding, by the network device, the channel state information feedback resulting in decoded feedback, comprising;

decoding the first portion resulting in a decoded format indicator; and

based on the decoded format indicator, decoding the second portion;

based on the decoded feedback, determining, by the network device, a transmission scheduling parameter, wherein the transmission scheduling parameter comprises a modulation and coding parameter applicable to modulation and coding of the signals by the network device;

transmitting, by the network device to the user equipment, the transmission scheduling parameter to configure the user equipment according to the transmission scheduling parameter; and

transmitting, by the network device to the user equipment, traffic data.

20. The method of claim 19, wherein the reference signal comprises a beam-formed signal.